Thermodynamics of a phase transition of silicon nanoparticles at the annealing and carbonization of porous silicon
- Togliatti State University (Russian Federation)
The formation of SiC nanocrystals of the cubic modification in the process of high-temperature carbonization of porous silicon has been analyzed. A thermodynamic model has been proposed to describe the experimental data obtained by atomic-force microscopy, Raman scattering, spectral analysis, Auger spectroscopy, and X-ray diffraction spectroscopy. It has been shown that the surface energy of silicon nanoparticles and quantum filaments is released in the process of annealing and carbonization. The Monte Carlo simulation has shown that the released energy makes it possible to overcome the nucleation barrier and to form SiC nanocrystals. The processes of laser annealing and electron irradiation of carbonized porous silicon have been analyzed.
- OSTI ID:
- 22471938
- Journal Information:
- Journal of Experimental and Theoretical Physics, Vol. 121, Issue 6; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANNEALING
ATOMIC FORCE MICROSCOPY
CARBONIZATION
COMPUTERIZED SIMULATION
IRRADIATION
MONTE CARLO METHOD
NANOPARTICLES
NANOSTRUCTURES
NUCLEATION
PHASE TRANSFORMATIONS
POROUS MATERIALS
RAMAN SPECTROSCOPY
SILICON
SILICON CARBIDES
SURFACE ENERGY
THERMODYNAMICS
X-RAY DIFFRACTION